/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/SubRegionRemesher.h
Call afterBasicRemeshPass()to disable and return tracking of removed triangles
set of removed triangles. This set will be cleared on next call toBeginTrackRemovedTrisInPass()
const [TSet](API\Runtime\Core\Containers\TSet)< int32 > & EndTrackRemovedTrisInPass()